B/ Rewrite the following sentences. Use 1st, 2nd and 3rd conditional.
  1. If you don´t have a receipt, you can´t take your jeans back.
Unless
  1. We didn´t invite you because we didn´t know you liked reggae music.

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  1. I´m busy this evening so I can´t come to your house.

  1. I think you should apologise to her.

  1. She won´t be able to help me unless I arrive early in the morning.
Unless she
  1. The driver fell asleep and caused the accident.

  1. We didn´t move to Paris last year and that´s why I didn´t learn French.

  1. I will phone your parents if your behaviour doesn´t change.

  1. In my opinion, Andrew´s mother should sell his computer.
Unless
  1. As long as teenagers have a computer, they´ll want to surf the Internet.
If
  1. Dave fell asleep so he missed the end of the accident.

  1. We can´t go out because we haven´t got any money.

  1. My sister gets bored because she doesn´t work.

  1. Luke hates flying so he never goes abroad.

  1. Jan´s classmate don´t like her because she is very big headed.